On Sep 17, 2014, at 7:04 AM, Daneel Yaitskov <rtfm.rtfm.r...@gmail.com> wrote:
> Hi, > > > Does Rust macro have flow control based on a variable value? > > I didn't find such info here http://doc.rust-lang.org/guide-macros.html. > > I'd like to get a macro expading a for loop. > > doTimes(3, println!("DDDD")) > => > println!("DDDD") > println!("DDDD") > println!("DDDD”) Perhaps I’m misunderstanding you, but in general that’s impossible. Specifically, variable varues aren’t known at runtime. So, for instance, if you wrote doTimes(x, println!(“DDDD”)) … there’s no way (in general) to know the value of ‘x’ until the program is run. Is there some reason you can’t just use a function call, here? John Clements _______________________________________________ Rust-dev mailing list Rust-dev@mozilla.org https://mail.mozilla.org/listinfo/rust-dev
